Truck bed extension



FIG. 1 is a perspective view of a truck bed extension showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken lines shown in FIG. 1 are for illustrative purposes only and form no part of the claim design. 

The ornamental design for a truck bed extention, as shown and described. 